Fig. 3From: Deep eutectic solvent-based manganese dioxide nanosheets composites for determination of DNA by a colorimetric methodUV absorption spectra of DES/MnO2 (line 1), TMB (line 2), DES/MnO2 + TMB (line 3) and inset show the corresponding solution color (a); the absorbance intensity of DES/MnO2-TMB system at different concentrations of DES/MnO2 and inset shows the corresponding visual changes in color (b). All the error bars were calculated by three independent experiment (n = 3)Back to article page